Question: Tell me era whose name has the word zirconian in it.
Paraphrase: Tell me the age in which the word zirconian has its name.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q630830 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'zirconian')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Zirconian, Zirconian